Malicious PDF — malware analysis report

Static analysis result for SHA-256 e68a1113866ba2e5…

MALICIOUS

PDF

33.4 KB Created: 2021-07-05 19:07:13 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-05
MD5: 298d02ee0763fa2ecb80d1cb86158165 SHA-1: 2eb4001e2838e826445259922484d0c15245e98d SHA-256: e68a1113866ba2e543a7fc99e3aa735a366e7e3488acd564bdfe7254effdd208
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document was flagged as malicious by an ML classifier. The file routes users through malicious redirector infrastructure and presents a deceptive download button. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9980

Heuristics 4

  • PDF links to a 'free generator / game hack' redirector high PDF_GAME_HACK_REDIRECT_LURE
    PDF's clickable action targets a redirector of the form /app/<id>/<slug>-game-hack — the landing-page shape of a large SEO 'free spins / generator / game hack' lure family that funnels victims through rotating disposable hosts to a malware/scam payload. The multi-link variants also trip ML/link-farm rules; this catches the single-link variants that otherwise score clean.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • External URI info PDF_URI
    PDF contains an external URL action
  • Embedded URL info EMBEDDED_URL
    One or more URLs were extracted from the document. The URL itself is not a detection — see the per-URL labels for which channel (macro, JS, link annotation, document body, ...) reached each URL.
    URL http://netcdn.tw/app/431946152/how-can-i-get-robux-game-hack PDF link annotation
    • https://perpus.upp.ac.id/digilib/repository/free-minecraft-website_GM479516143.pdfIn PDF document text
    • https://perpus.upp.ac.id/digilib/repository/free-spins-from-coin-master_GM406889139.pdfIn PDF document text
    • https://perpus.upp.ac.id/digilib/repository/roblox-vip-servers-for-free_GM431946152.pdfIn PDF document text
    • https://perpus.upp.ac.id/digilib/repository/minecraft-free-install_GM479516143.pdfIn PDF document text
    • https://perpus.upp.ac.id/digilib/repository/coin-master-free-spins-coins_GM406889139.pdfIn PDF document text
    • https://perpus.upp.ac.id/digilib/repository/coin-master-mod-apk_GM406889139.pdfIn PDF document text
    • https://perpus.upp.ac.id/digilib/repository/coin-master-hack-ios-10_GM406889139.pdfIn PDF document text
    • https://perpus.upp.ac.id/digilib/repository/coin-master-attack-hack-apk_GM406889139.pdfIn PDF document text
    • https://perpus.upp.ac.id/digilib/repository/free-robux-for-kids-no-verification_GM431946152.pdfIn PDF document text
    • https://perpus.upp.ac.id/digilib/repository/apps-that-give-you-free-robux_GM431946152.pdfIn PDF document text
    • https://perpus.upp.ac.id/digilib/repository/roblox-hide-and-seek-cheats_GM431946152.pdfIn PDF document text
    • https://perpus.upp.ac.id/digilib/repository/real-coin-master-hack-2021_GM406889139.pdfIn PDF document text
    • https://perpus.upp.ac.id/digilib/repository/free-robux-thumbnail_GM431946152.pdfIn PDF document text
    • https://perpus.upp.ac.id/digilib/repository/coin-master-hack-extension_GM406889139.pdfIn PDF document text
    • https://perpus.upp.ac.id/digilib/repository/free-spins-link-in-coin-master-2021_GM406889139.pdfIn PDF document text
    • https://perpus.upp.ac.id/digilib/repository/free-robux-mobile_GM431946152.pdfIn PDF document text
    • https://perpus.upp.ac.id/digilib/repository/free-robux-no-human-verification-or-survey-or-download-2021_GM431946152.pdfIn PDF document text
    • https://perpus.upp.ac.id/digilib/repository/robux-hack-2021_GM431946152.pdfIn PDF document text
    • https://perpus.upp.ac.id/digilib/repository/roblox-tracker_GM431946152.pdfIn PDF document text
    • https://perpus.upp.ac.id/digilib/repository/robux-hack-give-250k_GM431946152.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00002da1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2DA1 21820 bytes
SHA-256: 3acb614bdab4883b1f17524e10752e79f35a0365426f7567b4d6c694578273d0
font_01_sfnt_off00005dc1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5DC1 18820 bytes
SHA-256: c5e3dadbee401af008206382b0bcf9336b874183f98af384875f13c533e0884f

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